| [7983] | 1 | #include "btInternalEdgeUtility.h" | 
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|  | 2 |  | 
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|  | 3 | #include "BulletCollision/CollisionShapes/btBvhTriangleMeshShape.h" | 
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| [8393] | 4 | #include "BulletCollision/CollisionShapes/btScaledBvhTriangleMeshShape.h" | 
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| [7983] | 5 | #include "BulletCollision/CollisionShapes/btTriangleShape.h" | 
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|  | 6 | #include "BulletCollision/CollisionDispatch/btCollisionObject.h" | 
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|  | 7 | #include "BulletCollision/NarrowPhaseCollision/btManifoldPoint.h" | 
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|  | 8 | #include "LinearMath/btIDebugDraw.h" | 
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|  | 9 |  | 
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|  | 10 |  | 
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|  | 11 | //#define DEBUG_INTERNAL_EDGE | 
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|  | 12 |  | 
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|  | 13 | #ifdef DEBUG_INTERNAL_EDGE | 
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|  | 14 | #include <stdio.h> | 
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|  | 15 | #endif //DEBUG_INTERNAL_EDGE | 
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|  | 16 |  | 
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|  | 17 |  | 
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|  | 18 | #ifdef BT_INTERNAL_EDGE_DEBUG_DRAW | 
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|  | 19 | static btIDebugDraw* gDebugDrawer = 0; | 
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|  | 20 |  | 
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|  | 21 | void    btSetDebugDrawer(btIDebugDraw* debugDrawer) | 
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|  | 22 | { | 
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|  | 23 | gDebugDrawer = debugDrawer; | 
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|  | 24 | } | 
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|  | 25 |  | 
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|  | 26 | static void    btDebugDrawLine(const btVector3& from,const btVector3& to, const btVector3& color) | 
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|  | 27 | { | 
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|  | 28 | if (gDebugDrawer) | 
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|  | 29 | gDebugDrawer->drawLine(from,to,color); | 
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|  | 30 | } | 
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|  | 31 | #endif //BT_INTERNAL_EDGE_DEBUG_DRAW | 
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|  | 32 |  | 
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|  | 33 |  | 
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|  | 34 | static int      btGetHash(int partId, int triangleIndex) | 
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|  | 35 | { | 
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|  | 36 | int hash = (partId<<(31-MAX_NUM_PARTS_IN_BITS)) | triangleIndex; | 
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|  | 37 | return hash; | 
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|  | 38 | } | 
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|  | 39 |  | 
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|  | 40 |  | 
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|  | 41 |  | 
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|  | 42 | static btScalar btGetAngle(const btVector3& edgeA, const btVector3& normalA,const btVector3& normalB) | 
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|  | 43 | { | 
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|  | 44 | const btVector3 refAxis0  = edgeA; | 
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|  | 45 | const btVector3 refAxis1  = normalA; | 
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|  | 46 | const btVector3 swingAxis = normalB; | 
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|  | 47 | btScalar angle = btAtan2(swingAxis.dot(refAxis0), swingAxis.dot(refAxis1)); | 
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|  | 48 | return  angle; | 
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|  | 49 | } | 
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|  | 50 |  | 
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|  | 51 |  | 
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|  | 52 | struct btConnectivityProcessor : public btTriangleCallback | 
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|  | 53 | { | 
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|  | 54 | int                             m_partIdA; | 
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|  | 55 | int                             m_triangleIndexA; | 
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|  | 56 | btVector3*              m_triangleVerticesA; | 
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|  | 57 | btTriangleInfoMap*      m_triangleInfoMap; | 
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|  | 58 |  | 
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|  | 59 |  | 
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|  | 60 | virtual void processTriangle(btVector3* triangle, int partId, int triangleIndex) | 
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|  | 61 | { | 
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|  | 62 | //skip self-collisions | 
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|  | 63 | if ((m_partIdA == partId) && (m_triangleIndexA == triangleIndex)) | 
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|  | 64 | return; | 
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|  | 65 |  | 
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|  | 66 | //skip duplicates (disabled for now) | 
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|  | 67 | //if ((m_partIdA <= partId) && (m_triangleIndexA <= triangleIndex)) | 
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|  | 68 | //      return; | 
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|  | 69 |  | 
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|  | 70 | //search for shared vertices and edges | 
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|  | 71 | int numshared = 0; | 
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|  | 72 | int sharedVertsA[3]={-1,-1,-1}; | 
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|  | 73 | int sharedVertsB[3]={-1,-1,-1}; | 
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|  | 74 |  | 
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|  | 75 | ///skip degenerate triangles | 
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|  | 76 | btScalar crossBSqr = ((triangle[1]-triangle[0]).cross(triangle[2]-triangle[0])).length2(); | 
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|  | 77 | if (crossBSqr < m_triangleInfoMap->m_equalVertexThreshold) | 
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|  | 78 | return; | 
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|  | 79 |  | 
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|  | 80 |  | 
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|  | 81 | btScalar crossASqr = ((m_triangleVerticesA[1]-m_triangleVerticesA[0]).cross(m_triangleVerticesA[2]-m_triangleVerticesA[0])).length2(); | 
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|  | 82 | ///skip degenerate triangles | 
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|  | 83 | if (crossASqr< m_triangleInfoMap->m_equalVertexThreshold) | 
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|  | 84 | return; | 
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|  | 85 |  | 
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|  | 86 | #if 0 | 
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|  | 87 | printf("triangle A[0]   =       (%f,%f,%f)\ntriangle A[1]       =       (%f,%f,%f)\ntriangle A[2]       =       (%f,%f,%f)\n", | 
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|  | 88 | m_triangleVerticesA[0].getX(),m_triangleVerticesA[0].getY(),m_triangleVerticesA[0].getZ(), | 
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|  | 89 | m_triangleVerticesA[1].getX(),m_triangleVerticesA[1].getY(),m_triangleVerticesA[1].getZ(), | 
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|  | 90 | m_triangleVerticesA[2].getX(),m_triangleVerticesA[2].getY(),m_triangleVerticesA[2].getZ()); | 
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|  | 91 |  | 
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|  | 92 | printf("partId=%d, triangleIndex=%d\n",partId,triangleIndex); | 
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|  | 93 | printf("triangle B[0]   =       (%f,%f,%f)\ntriangle B[1]       =       (%f,%f,%f)\ntriangle B[2]       =       (%f,%f,%f)\n", | 
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|  | 94 | triangle[0].getX(),triangle[0].getY(),triangle[0].getZ(), | 
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|  | 95 | triangle[1].getX(),triangle[1].getY(),triangle[1].getZ(), | 
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|  | 96 | triangle[2].getX(),triangle[2].getY(),triangle[2].getZ()); | 
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|  | 97 | #endif | 
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|  | 98 |  | 
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|  | 99 | for (int i=0;i<3;i++) | 
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|  | 100 | { | 
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|  | 101 | for (int j=0;j<3;j++) | 
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|  | 102 | { | 
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|  | 103 | if ( (m_triangleVerticesA[i]-triangle[j]).length2() < m_triangleInfoMap->m_equalVertexThreshold) | 
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|  | 104 | { | 
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|  | 105 | sharedVertsA[numshared] = i; | 
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|  | 106 | sharedVertsB[numshared] = j; | 
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|  | 107 | numshared++; | 
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|  | 108 | ///degenerate case | 
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|  | 109 | if(numshared >= 3) | 
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|  | 110 | return; | 
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|  | 111 | } | 
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|  | 112 | } | 
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|  | 113 | ///degenerate case | 
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|  | 114 | if(numshared >= 3) | 
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|  | 115 | return; | 
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|  | 116 | } | 
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|  | 117 | switch (numshared) | 
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|  | 118 | { | 
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|  | 119 | case 0: | 
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|  | 120 | { | 
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|  | 121 | break; | 
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|  | 122 | } | 
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|  | 123 | case 1: | 
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|  | 124 | { | 
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|  | 125 | //shared vertex | 
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|  | 126 | break; | 
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|  | 127 | } | 
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|  | 128 | case 2: | 
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|  | 129 | { | 
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|  | 130 | //shared edge | 
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|  | 131 | //we need to make sure the edge is in the order V2V0 and not V0V2 so that the signs are correct | 
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|  | 132 | if (sharedVertsA[0] == 0 && sharedVertsA[1] == 2) | 
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|  | 133 | { | 
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|  | 134 | sharedVertsA[0] = 2; | 
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|  | 135 | sharedVertsA[1] = 0; | 
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|  | 136 | int tmp = sharedVertsB[1]; | 
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|  | 137 | sharedVertsB[1] = sharedVertsB[0]; | 
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|  | 138 | sharedVertsB[0] = tmp; | 
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|  | 139 | } | 
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|  | 140 |  | 
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|  | 141 | int hash = btGetHash(m_partIdA,m_triangleIndexA); | 
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|  | 142 |  | 
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|  | 143 | btTriangleInfo* info = m_triangleInfoMap->find(hash); | 
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|  | 144 | if (!info) | 
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|  | 145 | { | 
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|  | 146 | btTriangleInfo tmp; | 
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|  | 147 | m_triangleInfoMap->insert(hash,tmp); | 
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|  | 148 | info = m_triangleInfoMap->find(hash); | 
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|  | 149 | } | 
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|  | 150 |  | 
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|  | 151 | int sumvertsA = sharedVertsA[0]+sharedVertsA[1]; | 
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|  | 152 | int otherIndexA = 3-sumvertsA; | 
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|  | 153 |  | 
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|  | 154 |  | 
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|  | 155 | btVector3 edge(m_triangleVerticesA[sharedVertsA[1]]-m_triangleVerticesA[sharedVertsA[0]]); | 
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|  | 156 |  | 
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|  | 157 | btTriangleShape tA(m_triangleVerticesA[0],m_triangleVerticesA[1],m_triangleVerticesA[2]); | 
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|  | 158 | int otherIndexB = 3-(sharedVertsB[0]+sharedVertsB[1]); | 
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|  | 159 |  | 
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|  | 160 | btTriangleShape tB(triangle[sharedVertsB[1]],triangle[sharedVertsB[0]],triangle[otherIndexB]); | 
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|  | 161 | //btTriangleShape tB(triangle[0],triangle[1],triangle[2]); | 
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|  | 162 |  | 
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|  | 163 | btVector3 normalA; | 
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|  | 164 | btVector3 normalB; | 
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|  | 165 | tA.calcNormal(normalA); | 
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|  | 166 | tB.calcNormal(normalB); | 
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|  | 167 | edge.normalize(); | 
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|  | 168 | btVector3 edgeCrossA = edge.cross(normalA).normalize(); | 
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|  | 169 |  | 
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|  | 170 | { | 
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|  | 171 | btVector3 tmp = m_triangleVerticesA[otherIndexA]-m_triangleVerticesA[sharedVertsA[0]]; | 
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|  | 172 | if (edgeCrossA.dot(tmp) < 0) | 
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|  | 173 | { | 
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|  | 174 | edgeCrossA*=-1; | 
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|  | 175 | } | 
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|  | 176 | } | 
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|  | 177 |  | 
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|  | 178 | btVector3 edgeCrossB = edge.cross(normalB).normalize(); | 
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|  | 179 |  | 
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|  | 180 | { | 
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|  | 181 | btVector3 tmp = triangle[otherIndexB]-triangle[sharedVertsB[0]]; | 
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|  | 182 | if (edgeCrossB.dot(tmp) < 0) | 
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|  | 183 | { | 
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|  | 184 | edgeCrossB*=-1; | 
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|  | 185 | } | 
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|  | 186 | } | 
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|  | 187 |  | 
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|  | 188 | btScalar        angle2 = 0; | 
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|  | 189 | btScalar        ang4 = 0.f; | 
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|  | 190 |  | 
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|  | 191 |  | 
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|  | 192 | btVector3 calculatedEdge = edgeCrossA.cross(edgeCrossB); | 
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|  | 193 | btScalar len2 = calculatedEdge.length2(); | 
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|  | 194 |  | 
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|  | 195 | btScalar correctedAngle(0); | 
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|  | 196 | btVector3 calculatedNormalB = normalA; | 
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|  | 197 | bool isConvex = false; | 
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|  | 198 |  | 
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|  | 199 | if (len2<m_triangleInfoMap->m_planarEpsilon) | 
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|  | 200 | { | 
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|  | 201 | angle2 = 0.f; | 
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|  | 202 | ang4 = 0.f; | 
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|  | 203 | } else | 
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|  | 204 | { | 
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|  | 205 |  | 
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|  | 206 | calculatedEdge.normalize(); | 
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|  | 207 | btVector3 calculatedNormalA = calculatedEdge.cross(edgeCrossA); | 
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|  | 208 | calculatedNormalA.normalize(); | 
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|  | 209 | angle2 = btGetAngle(calculatedNormalA,edgeCrossA,edgeCrossB); | 
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|  | 210 | ang4 = SIMD_PI-angle2; | 
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|  | 211 | btScalar dotA = normalA.dot(edgeCrossB); | 
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|  | 212 | ///@todo: check if we need some epsilon, due to floating point imprecision | 
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|  | 213 | isConvex = (dotA<0.); | 
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|  | 214 |  | 
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|  | 215 | correctedAngle = isConvex ? ang4 : -ang4; | 
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|  | 216 | btQuaternion orn2(calculatedEdge,-correctedAngle); | 
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|  | 217 | calculatedNormalB = btMatrix3x3(orn2)*normalA; | 
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|  | 218 |  | 
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|  | 219 |  | 
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|  | 220 | } | 
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|  | 221 |  | 
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|  | 222 |  | 
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|  | 223 |  | 
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|  | 224 |  | 
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|  | 225 |  | 
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|  | 226 | //alternatively use | 
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|  | 227 | //btVector3 calculatedNormalB2 = quatRotate(orn,normalA); | 
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|  | 228 |  | 
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|  | 229 |  | 
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|  | 230 | switch (sumvertsA) | 
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|  | 231 | { | 
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|  | 232 | case 1: | 
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|  | 233 | { | 
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|  | 234 | btVector3 edge = m_triangleVerticesA[0]-m_triangleVerticesA[1]; | 
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|  | 235 | btQuaternion orn(edge,-correctedAngle); | 
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|  | 236 | btVector3 computedNormalB = quatRotate(orn,normalA); | 
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|  | 237 | btScalar bla = computedNormalB.dot(normalB); | 
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|  | 238 | if (bla<0) | 
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|  | 239 | { | 
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|  | 240 | computedNormalB*=-1; | 
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|  | 241 | info->m_flags |= TRI_INFO_V0V1_SWAP_NORMALB; | 
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|  | 242 | } | 
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|  | 243 | #ifdef DEBUG_INTERNAL_EDGE | 
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|  | 244 | if ((computedNormalB-normalB).length()>0.0001) | 
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|  | 245 | { | 
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|  | 246 | printf("warning: normals not identical\n"); | 
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|  | 247 | } | 
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|  | 248 | #endif//DEBUG_INTERNAL_EDGE | 
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|  | 249 |  | 
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|  | 250 | info->m_edgeV0V1Angle = -correctedAngle; | 
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|  | 251 |  | 
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|  | 252 | if (isConvex) | 
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|  | 253 | info->m_flags |= TRI_INFO_V0V1_CONVEX; | 
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|  | 254 | break; | 
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|  | 255 | } | 
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|  | 256 | case 2: | 
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|  | 257 | { | 
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|  | 258 | btVector3 edge = m_triangleVerticesA[2]-m_triangleVerticesA[0]; | 
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|  | 259 | btQuaternion orn(edge,-correctedAngle); | 
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|  | 260 | btVector3 computedNormalB = quatRotate(orn,normalA); | 
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|  | 261 | if (computedNormalB.dot(normalB)<0) | 
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|  | 262 | { | 
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|  | 263 | computedNormalB*=-1; | 
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|  | 264 | info->m_flags |= TRI_INFO_V2V0_SWAP_NORMALB; | 
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|  | 265 | } | 
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|  | 266 |  | 
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|  | 267 | #ifdef DEBUG_INTERNAL_EDGE | 
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|  | 268 | if ((computedNormalB-normalB).length()>0.0001) | 
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|  | 269 | { | 
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|  | 270 | printf("warning: normals not identical\n"); | 
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|  | 271 | } | 
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|  | 272 | #endif //DEBUG_INTERNAL_EDGE | 
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|  | 273 | info->m_edgeV2V0Angle = -correctedAngle; | 
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|  | 274 | if (isConvex) | 
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|  | 275 | info->m_flags |= TRI_INFO_V2V0_CONVEX; | 
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|  | 276 | break; | 
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|  | 277 | } | 
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|  | 278 | case 3: | 
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|  | 279 | { | 
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|  | 280 | btVector3 edge = m_triangleVerticesA[1]-m_triangleVerticesA[2]; | 
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|  | 281 | btQuaternion orn(edge,-correctedAngle); | 
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|  | 282 | btVector3 computedNormalB = quatRotate(orn,normalA); | 
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|  | 283 | if (computedNormalB.dot(normalB)<0) | 
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|  | 284 | { | 
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|  | 285 | info->m_flags |= TRI_INFO_V1V2_SWAP_NORMALB; | 
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|  | 286 | computedNormalB*=-1; | 
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|  | 287 | } | 
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|  | 288 | #ifdef DEBUG_INTERNAL_EDGE | 
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|  | 289 | if ((computedNormalB-normalB).length()>0.0001) | 
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|  | 290 | { | 
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|  | 291 | printf("warning: normals not identical\n"); | 
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|  | 292 | } | 
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|  | 293 | #endif //DEBUG_INTERNAL_EDGE | 
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|  | 294 | info->m_edgeV1V2Angle = -correctedAngle; | 
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|  | 295 |  | 
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|  | 296 | if (isConvex) | 
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|  | 297 | info->m_flags |= TRI_INFO_V1V2_CONVEX; | 
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|  | 298 | break; | 
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|  | 299 | } | 
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|  | 300 | } | 
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|  | 301 |  | 
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|  | 302 | break; | 
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|  | 303 | } | 
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|  | 304 | default: | 
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|  | 305 | { | 
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|  | 306 | //                              printf("warning: duplicate triangle\n"); | 
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|  | 307 | } | 
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|  | 308 |  | 
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|  | 309 | } | 
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|  | 310 | } | 
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|  | 311 | }; | 
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|  | 312 | ///////////////////////////////////////////////////////// | 
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|  | 313 | ///////////////////////////////////////////////////////// | 
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|  | 314 |  | 
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|  | 315 | void btGenerateInternalEdgeInfo (btBvhTriangleMeshShape*trimeshShape, btTriangleInfoMap* triangleInfoMap) | 
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|  | 316 | { | 
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|  | 317 | //the user pointer shouldn't already be used for other purposes, we intend to store connectivity info there! | 
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|  | 318 | if (trimeshShape->getTriangleInfoMap()) | 
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|  | 319 | return; | 
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|  | 320 |  | 
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|  | 321 | trimeshShape->setTriangleInfoMap(triangleInfoMap); | 
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|  | 322 |  | 
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|  | 323 | btStridingMeshInterface* meshInterface = trimeshShape->getMeshInterface(); | 
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|  | 324 | const btVector3& meshScaling = meshInterface->getScaling(); | 
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|  | 325 |  | 
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|  | 326 | for (int partId = 0; partId< meshInterface->getNumSubParts();partId++) | 
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|  | 327 | { | 
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|  | 328 | const unsigned char *vertexbase = 0; | 
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|  | 329 | int numverts = 0; | 
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|  | 330 | PHY_ScalarType type = PHY_INTEGER; | 
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|  | 331 | int stride = 0; | 
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|  | 332 | const unsigned char *indexbase = 0; | 
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|  | 333 | int indexstride = 0; | 
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|  | 334 | int numfaces = 0; | 
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|  | 335 | PHY_ScalarType indicestype = PHY_INTEGER; | 
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|  | 336 | //PHY_ScalarType indexType=0; | 
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|  | 337 |  | 
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|  | 338 | btVector3 triangleVerts[3]; | 
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|  | 339 | meshInterface->getLockedReadOnlyVertexIndexBase(&vertexbase,numverts,   type,stride,&indexbase,indexstride,numfaces,indicestype,partId); | 
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|  | 340 | btVector3 aabbMin,aabbMax; | 
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|  | 341 |  | 
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|  | 342 | for (int triangleIndex = 0 ; triangleIndex < numfaces;triangleIndex++) | 
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|  | 343 | { | 
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|  | 344 | unsigned int* gfxbase = (unsigned int*)(indexbase+triangleIndex*indexstride); | 
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|  | 345 |  | 
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|  | 346 | for (int j=2;j>=0;j--) | 
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|  | 347 | { | 
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|  | 348 |  | 
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|  | 349 | int graphicsindex = indicestype==PHY_SHORT?((unsigned short*)gfxbase)[j]:gfxbase[j]; | 
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|  | 350 | if (type == PHY_FLOAT) | 
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|  | 351 | { | 
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|  | 352 | float* graphicsbase = (float*)(vertexbase+graphicsindex*stride); | 
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|  | 353 | triangleVerts[j] = btVector3( | 
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|  | 354 | graphicsbase[0]*meshScaling.getX(), | 
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|  | 355 | graphicsbase[1]*meshScaling.getY(), | 
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|  | 356 | graphicsbase[2]*meshScaling.getZ()); | 
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|  | 357 | } | 
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|  | 358 | else | 
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|  | 359 | { | 
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|  | 360 | double* graphicsbase = (double*)(vertexbase+graphicsindex*stride); | 
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|  | 361 | triangleVerts[j] = btVector3( btScalar(graphicsbase[0]*meshScaling.getX()), btScalar(graphicsbase[1]*meshScaling.getY()), btScalar(graphicsbase[2]*meshScaling.getZ())); | 
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|  | 362 | } | 
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|  | 363 | } | 
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|  | 364 | aabbMin.setValue(btScalar(BT_LARGE_FLOAT),btScalar(BT_LARGE_FLOAT),btScalar(BT_LARGE_FLOAT)); | 
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|  | 365 | aabbMax.setValue(btScalar(-BT_LARGE_FLOAT),btScalar(-BT_LARGE_FLOAT),btScalar(-BT_LARGE_FLOAT)); | 
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|  | 366 | aabbMin.setMin(triangleVerts[0]); | 
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|  | 367 | aabbMax.setMax(triangleVerts[0]); | 
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|  | 368 | aabbMin.setMin(triangleVerts[1]); | 
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|  | 369 | aabbMax.setMax(triangleVerts[1]); | 
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|  | 370 | aabbMin.setMin(triangleVerts[2]); | 
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|  | 371 | aabbMax.setMax(triangleVerts[2]); | 
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|  | 372 |  | 
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|  | 373 | btConnectivityProcessor connectivityProcessor; | 
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|  | 374 | connectivityProcessor.m_partIdA = partId; | 
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|  | 375 | connectivityProcessor.m_triangleIndexA = triangleIndex; | 
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|  | 376 | connectivityProcessor.m_triangleVerticesA = &triangleVerts[0]; | 
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|  | 377 | connectivityProcessor.m_triangleInfoMap  = triangleInfoMap; | 
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|  | 378 |  | 
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|  | 379 | trimeshShape->processAllTriangles(&connectivityProcessor,aabbMin,aabbMax); | 
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|  | 380 | } | 
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|  | 381 |  | 
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|  | 382 | } | 
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|  | 383 |  | 
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|  | 384 | } | 
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|  | 385 |  | 
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|  | 386 |  | 
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|  | 387 |  | 
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|  | 388 |  | 
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|  | 389 | // Given a point and a line segment (defined by two points), compute the closest point | 
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|  | 390 | // in the line.  Cap the point at the endpoints of the line segment. | 
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|  | 391 | void btNearestPointInLineSegment(const btVector3 &point, const btVector3& line0, const btVector3& line1, btVector3& nearestPoint) | 
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|  | 392 | { | 
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|  | 393 | btVector3 lineDelta     = line1 - line0; | 
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|  | 394 |  | 
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|  | 395 | // Handle degenerate lines | 
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|  | 396 | if ( lineDelta.fuzzyZero()) | 
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|  | 397 | { | 
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|  | 398 | nearestPoint = line0; | 
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|  | 399 | } | 
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|  | 400 | else | 
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|  | 401 | { | 
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|  | 402 | btScalar delta = (point-line0).dot(lineDelta) / (lineDelta).dot(lineDelta); | 
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|  | 403 |  | 
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|  | 404 | // Clamp the point to conform to the segment's endpoints | 
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|  | 405 | if ( delta < 0 ) | 
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|  | 406 | delta = 0; | 
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|  | 407 | else if ( delta > 1 ) | 
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|  | 408 | delta = 1; | 
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|  | 409 |  | 
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|  | 410 | nearestPoint = line0 + lineDelta*delta; | 
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|  | 411 | } | 
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|  | 412 | } | 
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|  | 413 |  | 
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|  | 414 |  | 
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|  | 415 |  | 
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|  | 416 |  | 
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|  | 417 | bool    btClampNormal(const btVector3& edge,const btVector3& tri_normal_org,const btVector3& localContactNormalOnB, btScalar correctedEdgeAngle, btVector3 & clampedLocalNormal) | 
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|  | 418 | { | 
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|  | 419 | btVector3 tri_normal = tri_normal_org; | 
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|  | 420 | //we only have a local triangle normal, not a local contact normal -> only normal in world space... | 
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|  | 421 | //either compute the current angle all in local space, or all in world space | 
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|  | 422 |  | 
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|  | 423 | btVector3 edgeCross = edge.cross(tri_normal).normalize(); | 
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|  | 424 | btScalar curAngle = btGetAngle(edgeCross,tri_normal,localContactNormalOnB); | 
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|  | 425 |  | 
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|  | 426 | if (correctedEdgeAngle<0) | 
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|  | 427 | { | 
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|  | 428 | if (curAngle < correctedEdgeAngle) | 
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|  | 429 | { | 
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|  | 430 | btScalar diffAngle = correctedEdgeAngle-curAngle; | 
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|  | 431 | btQuaternion rotation(edge,diffAngle ); | 
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|  | 432 | clampedLocalNormal = btMatrix3x3(rotation)*localContactNormalOnB; | 
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|  | 433 | return true; | 
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|  | 434 | } | 
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|  | 435 | } | 
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|  | 436 |  | 
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|  | 437 | if (correctedEdgeAngle>=0) | 
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|  | 438 | { | 
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|  | 439 | if (curAngle > correctedEdgeAngle) | 
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|  | 440 | { | 
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|  | 441 | btScalar diffAngle = correctedEdgeAngle-curAngle; | 
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|  | 442 | btQuaternion rotation(edge,diffAngle ); | 
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|  | 443 | clampedLocalNormal = btMatrix3x3(rotation)*localContactNormalOnB; | 
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|  | 444 | return true; | 
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|  | 445 | } | 
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|  | 446 | } | 
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|  | 447 | return false; | 
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|  | 448 | } | 
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|  | 449 |  | 
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|  | 450 |  | 
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|  | 451 |  | 
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|  | 452 | /// Changes a btManifoldPoint collision normal to the normal from the mesh. | 
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|  | 453 | void btAdjustInternalEdgeContacts(btManifoldPoint& cp, const btCollisionObject* colObj0,const btCollisionObject* colObj1, int partId0, int index0, int normalAdjustFlags) | 
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|  | 454 | { | 
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|  | 455 | //btAssert(colObj0->getCollisionShape()->getShapeType() == TRIANGLE_SHAPE_PROXYTYPE); | 
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|  | 456 | if (colObj0->getCollisionShape()->getShapeType() != TRIANGLE_SHAPE_PROXYTYPE) | 
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|  | 457 | return; | 
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|  | 458 |  | 
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| [8393] | 459 | btBvhTriangleMeshShape* trimesh = 0; | 
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|  | 460 |  | 
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|  | 461 | if( colObj0->getRootCollisionShape()->getShapeType() == SCALED_TRIANGLE_MESH_SHAPE_PROXYTYPE ) | 
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|  | 462 | trimesh = ((btScaledBvhTriangleMeshShape*)colObj0->getRootCollisionShape())->getChildShape(); | 
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|  | 463 | else | 
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|  | 464 | trimesh = (btBvhTriangleMeshShape*)colObj0->getRootCollisionShape(); | 
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|  | 465 |  | 
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|  | 466 | btTriangleInfoMap* triangleInfoMapPtr = (btTriangleInfoMap*) trimesh->getTriangleInfoMap(); | 
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| [7983] | 467 | if (!triangleInfoMapPtr) | 
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|  | 468 | return; | 
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|  | 469 |  | 
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|  | 470 | int hash = btGetHash(partId0,index0); | 
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|  | 471 |  | 
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|  | 472 |  | 
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|  | 473 | btTriangleInfo* info = triangleInfoMapPtr->find(hash); | 
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|  | 474 | if (!info) | 
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|  | 475 | return; | 
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|  | 476 |  | 
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|  | 477 | btScalar frontFacing = (normalAdjustFlags & BT_TRIANGLE_CONVEX_BACKFACE_MODE)==0? 1.f : -1.f; | 
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|  | 478 |  | 
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|  | 479 | const btTriangleShape* tri_shape = static_cast<const btTriangleShape*>(colObj0->getCollisionShape()); | 
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|  | 480 | btVector3 v0,v1,v2; | 
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|  | 481 | tri_shape->getVertex(0,v0); | 
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|  | 482 | tri_shape->getVertex(1,v1); | 
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|  | 483 | tri_shape->getVertex(2,v2); | 
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|  | 484 |  | 
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|  | 485 | btVector3 center = (v0+v1+v2)*btScalar(1./3.); | 
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|  | 486 |  | 
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|  | 487 | btVector3 red(1,0,0), green(0,1,0),blue(0,0,1),white(1,1,1),black(0,0,0); | 
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|  | 488 | btVector3 tri_normal; | 
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|  | 489 | tri_shape->calcNormal(tri_normal); | 
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|  | 490 |  | 
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|  | 491 | //btScalar dot = tri_normal.dot(cp.m_normalWorldOnB); | 
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|  | 492 | btVector3 nearest; | 
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|  | 493 | btNearestPointInLineSegment(cp.m_localPointB,v0,v1,nearest); | 
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|  | 494 |  | 
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|  | 495 | btVector3 contact = cp.m_localPointB; | 
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|  | 496 | #ifdef BT_INTERNAL_EDGE_DEBUG_DRAW | 
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|  | 497 | const btTransform& tr = colObj0->getWorldTransform(); | 
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|  | 498 | btDebugDrawLine(tr*nearest,tr*cp.m_localPointB,red); | 
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|  | 499 | #endif //BT_INTERNAL_EDGE_DEBUG_DRAW | 
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|  | 500 |  | 
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|  | 501 |  | 
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|  | 502 |  | 
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|  | 503 | bool isNearEdge = false; | 
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|  | 504 |  | 
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|  | 505 | int numConcaveEdgeHits = 0; | 
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|  | 506 | int numConvexEdgeHits = 0; | 
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|  | 507 |  | 
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|  | 508 | btVector3 localContactNormalOnB = colObj0->getWorldTransform().getBasis().transpose() * cp.m_normalWorldOnB; | 
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|  | 509 | localContactNormalOnB.normalize();//is this necessary? | 
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| [8393] | 510 |  | 
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|  | 511 | // Get closest edge | 
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|  | 512 | int      bestedge=-1; | 
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|  | 513 | float    disttobestedge=BT_LARGE_FLOAT; | 
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|  | 514 | // | 
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|  | 515 | // Edge 0 -> 1 | 
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|  | 516 | if (btFabs(info->m_edgeV0V1Angle)< triangleInfoMapPtr->m_maxEdgeAngleThreshold) | 
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|  | 517 | { | 
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|  | 518 | btVector3 nearest; | 
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|  | 519 | btNearestPointInLineSegment( cp.m_localPointB, v0, v1, nearest ); | 
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|  | 520 | float     len=(contact-nearest).length(); | 
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|  | 521 | // | 
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|  | 522 | if( len < disttobestedge ) | 
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|  | 523 | { | 
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|  | 524 | bestedge=0; | 
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|  | 525 | disttobestedge=len; | 
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|  | 526 | } | 
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|  | 527 | } | 
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|  | 528 | // Edge 1 -> 2 | 
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|  | 529 | if (btFabs(info->m_edgeV1V2Angle)< triangleInfoMapPtr->m_maxEdgeAngleThreshold) | 
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|  | 530 | { | 
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|  | 531 | btVector3 nearest; | 
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|  | 532 | btNearestPointInLineSegment( cp.m_localPointB, v1, v2, nearest ); | 
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|  | 533 | float     len=(contact-nearest).length(); | 
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|  | 534 | // | 
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|  | 535 | if( len < disttobestedge ) | 
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|  | 536 | { | 
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|  | 537 | bestedge=1; | 
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|  | 538 | disttobestedge=len; | 
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|  | 539 | } | 
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|  | 540 | } | 
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|  | 541 | // Edge 2 -> 0 | 
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|  | 542 | if (btFabs(info->m_edgeV2V0Angle)< triangleInfoMapPtr->m_maxEdgeAngleThreshold) | 
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|  | 543 | { | 
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|  | 544 | btVector3 nearest; | 
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|  | 545 | btNearestPointInLineSegment( cp.m_localPointB, v2, v0, nearest ); | 
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|  | 546 | float     len=(contact-nearest).length(); | 
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|  | 547 | // | 
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|  | 548 | if( len < disttobestedge ) | 
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|  | 549 | { | 
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|  | 550 | bestedge=2; | 
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|  | 551 | disttobestedge=len; | 
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|  | 552 | } | 
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|  | 553 | } | 
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|  | 554 |  | 
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|  | 555 | #ifdef BT_INTERNAL_EDGE_DEBUG_DRAW | 
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|  | 556 | btVector3 upfix=tri_normal * btVector3(0.1f,0.1f,0.1f); | 
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|  | 557 | btDebugDrawLine(tr * v0 + upfix, tr * v1 + upfix, red ); | 
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|  | 558 | #endif | 
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|  | 559 | if (btFabs(info->m_edgeV0V1Angle)< triangleInfoMapPtr->m_maxEdgeAngleThreshold) | 
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| [7983] | 560 | { | 
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|  | 561 | #ifdef BT_INTERNAL_EDGE_DEBUG_DRAW | 
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|  | 562 | btDebugDrawLine(tr*contact,tr*(contact+cp.m_normalWorldOnB*10),black); | 
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|  | 563 | #endif | 
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|  | 564 | btScalar len = (contact-nearest).length(); | 
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|  | 565 | if(len<triangleInfoMapPtr->m_edgeDistanceThreshold) | 
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| [8393] | 566 | if( bestedge==0 ) | 
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| [7983] | 567 | { | 
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|  | 568 | btVector3 edge(v0-v1); | 
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|  | 569 | isNearEdge = true; | 
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|  | 570 |  | 
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|  | 571 | if (info->m_edgeV0V1Angle==btScalar(0)) | 
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|  | 572 | { | 
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|  | 573 | numConcaveEdgeHits++; | 
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|  | 574 | } else | 
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|  | 575 | { | 
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|  | 576 |  | 
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|  | 577 | bool isEdgeConvex = (info->m_flags & TRI_INFO_V0V1_CONVEX); | 
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|  | 578 | btScalar swapFactor = isEdgeConvex ? btScalar(1) : btScalar(-1); | 
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|  | 579 | #ifdef BT_INTERNAL_EDGE_DEBUG_DRAW | 
|---|
|  | 580 | btDebugDrawLine(tr*nearest,tr*(nearest+swapFactor*tri_normal*10),white); | 
|---|
|  | 581 | #endif //BT_INTERNAL_EDGE_DEBUG_DRAW | 
|---|
|  | 582 |  | 
|---|
|  | 583 | btVector3 nA = swapFactor * tri_normal; | 
|---|
|  | 584 |  | 
|---|
|  | 585 | btQuaternion orn(edge,info->m_edgeV0V1Angle); | 
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|  | 586 | btVector3 computedNormalB = quatRotate(orn,tri_normal); | 
|---|
|  | 587 | if (info->m_flags & TRI_INFO_V0V1_SWAP_NORMALB) | 
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|  | 588 | computedNormalB*=-1; | 
|---|
|  | 589 | btVector3 nB = swapFactor*computedNormalB; | 
|---|
|  | 590 |  | 
|---|
|  | 591 | btScalar        NdotA = localContactNormalOnB.dot(nA); | 
|---|
|  | 592 | btScalar        NdotB = localContactNormalOnB.dot(nB); | 
|---|
|  | 593 | bool backFacingNormal = (NdotA< triangleInfoMapPtr->m_convexEpsilon) && (NdotB<triangleInfoMapPtr->m_convexEpsilon); | 
|---|
|  | 594 |  | 
|---|
|  | 595 | #ifdef DEBUG_INTERNAL_EDGE | 
|---|
|  | 596 | { | 
|---|
|  | 597 |  | 
|---|
|  | 598 | btDebugDrawLine(cp.getPositionWorldOnB(),cp.getPositionWorldOnB()+tr.getBasis()*(nB*20),red); | 
|---|
|  | 599 | } | 
|---|
|  | 600 | #endif //DEBUG_INTERNAL_EDGE | 
|---|
|  | 601 |  | 
|---|
|  | 602 |  | 
|---|
|  | 603 | if (backFacingNormal) | 
|---|
|  | 604 | { | 
|---|
|  | 605 | numConcaveEdgeHits++; | 
|---|
|  | 606 | } | 
|---|
|  | 607 | else | 
|---|
|  | 608 | { | 
|---|
|  | 609 | numConvexEdgeHits++; | 
|---|
|  | 610 | btVector3 clampedLocalNormal; | 
|---|
|  | 611 | bool isClamped = btClampNormal(edge,swapFactor*tri_normal,localContactNormalOnB, info->m_edgeV0V1Angle,clampedLocalNormal); | 
|---|
|  | 612 | if (isClamped) | 
|---|
|  | 613 | { | 
|---|
|  | 614 | if (((normalAdjustFlags & BT_TRIANGLE_CONVEX_DOUBLE_SIDED)!=0) || (clampedLocalNormal.dot(frontFacing*tri_normal)>0)) | 
|---|
|  | 615 | { | 
|---|
|  | 616 | btVector3 newNormal = colObj0->getWorldTransform().getBasis() * clampedLocalNormal; | 
|---|
|  | 617 | //                                      cp.m_distance1 = cp.m_distance1 * newNormal.dot(cp.m_normalWorldOnB); | 
|---|
|  | 618 | cp.m_normalWorldOnB = newNormal; | 
|---|
|  | 619 | // Reproject collision point along normal. (what about cp.m_distance1?) | 
|---|
|  | 620 | cp.m_positionWorldOnB = cp.m_positionWorldOnA - cp.m_normalWorldOnB * cp.m_distance1; | 
|---|
|  | 621 | cp.m_localPointB = colObj0->getWorldTransform().invXform(cp.m_positionWorldOnB); | 
|---|
|  | 622 |  | 
|---|
|  | 623 | } | 
|---|
|  | 624 | } | 
|---|
|  | 625 | } | 
|---|
|  | 626 | } | 
|---|
|  | 627 | } | 
|---|
|  | 628 | } | 
|---|
|  | 629 |  | 
|---|
|  | 630 | btNearestPointInLineSegment(contact,v1,v2,nearest); | 
|---|
|  | 631 | #ifdef BT_INTERNAL_EDGE_DEBUG_DRAW | 
|---|
|  | 632 | btDebugDrawLine(tr*nearest,tr*cp.m_localPointB,green); | 
|---|
|  | 633 | #endif //BT_INTERNAL_EDGE_DEBUG_DRAW | 
|---|
|  | 634 |  | 
|---|
| [8393] | 635 | #ifdef BT_INTERNAL_EDGE_DEBUG_DRAW | 
|---|
|  | 636 | btDebugDrawLine(tr * v1 + upfix, tr * v2 + upfix , green ); | 
|---|
|  | 637 | #endif | 
|---|
|  | 638 |  | 
|---|
|  | 639 | if (btFabs(info->m_edgeV1V2Angle)< triangleInfoMapPtr->m_maxEdgeAngleThreshold) | 
|---|
| [7983] | 640 | { | 
|---|
|  | 641 | #ifdef BT_INTERNAL_EDGE_DEBUG_DRAW | 
|---|
|  | 642 | btDebugDrawLine(tr*contact,tr*(contact+cp.m_normalWorldOnB*10),black); | 
|---|
|  | 643 | #endif //BT_INTERNAL_EDGE_DEBUG_DRAW | 
|---|
|  | 644 |  | 
|---|
|  | 645 |  | 
|---|
|  | 646 |  | 
|---|
|  | 647 | btScalar len = (contact-nearest).length(); | 
|---|
|  | 648 | if(len<triangleInfoMapPtr->m_edgeDistanceThreshold) | 
|---|
| [8393] | 649 | if( bestedge==1 ) | 
|---|
| [7983] | 650 | { | 
|---|
|  | 651 | isNearEdge = true; | 
|---|
|  | 652 | #ifdef BT_INTERNAL_EDGE_DEBUG_DRAW | 
|---|
|  | 653 | btDebugDrawLine(tr*nearest,tr*(nearest+tri_normal*10),white); | 
|---|
|  | 654 | #endif //BT_INTERNAL_EDGE_DEBUG_DRAW | 
|---|
|  | 655 |  | 
|---|
|  | 656 | btVector3 edge(v1-v2); | 
|---|
|  | 657 |  | 
|---|
|  | 658 | isNearEdge = true; | 
|---|
|  | 659 |  | 
|---|
|  | 660 | if (info->m_edgeV1V2Angle == btScalar(0)) | 
|---|
|  | 661 | { | 
|---|
|  | 662 | numConcaveEdgeHits++; | 
|---|
|  | 663 | } else | 
|---|
|  | 664 | { | 
|---|
|  | 665 | bool isEdgeConvex = (info->m_flags & TRI_INFO_V1V2_CONVEX)!=0; | 
|---|
|  | 666 | btScalar swapFactor = isEdgeConvex ? btScalar(1) : btScalar(-1); | 
|---|
|  | 667 | #ifdef BT_INTERNAL_EDGE_DEBUG_DRAW | 
|---|
|  | 668 | btDebugDrawLine(tr*nearest,tr*(nearest+swapFactor*tri_normal*10),white); | 
|---|
|  | 669 | #endif //BT_INTERNAL_EDGE_DEBUG_DRAW | 
|---|
|  | 670 |  | 
|---|
|  | 671 | btVector3 nA = swapFactor * tri_normal; | 
|---|
|  | 672 |  | 
|---|
|  | 673 | btQuaternion orn(edge,info->m_edgeV1V2Angle); | 
|---|
|  | 674 | btVector3 computedNormalB = quatRotate(orn,tri_normal); | 
|---|
|  | 675 | if (info->m_flags & TRI_INFO_V1V2_SWAP_NORMALB) | 
|---|
|  | 676 | computedNormalB*=-1; | 
|---|
|  | 677 | btVector3 nB = swapFactor*computedNormalB; | 
|---|
|  | 678 |  | 
|---|
|  | 679 | #ifdef DEBUG_INTERNAL_EDGE | 
|---|
|  | 680 | { | 
|---|
|  | 681 | btDebugDrawLine(cp.getPositionWorldOnB(),cp.getPositionWorldOnB()+tr.getBasis()*(nB*20),red); | 
|---|
|  | 682 | } | 
|---|
|  | 683 | #endif //DEBUG_INTERNAL_EDGE | 
|---|
|  | 684 |  | 
|---|
|  | 685 |  | 
|---|
|  | 686 | btScalar        NdotA = localContactNormalOnB.dot(nA); | 
|---|
|  | 687 | btScalar        NdotB = localContactNormalOnB.dot(nB); | 
|---|
|  | 688 | bool backFacingNormal = (NdotA< triangleInfoMapPtr->m_convexEpsilon) && (NdotB<triangleInfoMapPtr->m_convexEpsilon); | 
|---|
|  | 689 |  | 
|---|
|  | 690 | if (backFacingNormal) | 
|---|
|  | 691 | { | 
|---|
|  | 692 | numConcaveEdgeHits++; | 
|---|
|  | 693 | } | 
|---|
|  | 694 | else | 
|---|
|  | 695 | { | 
|---|
|  | 696 | numConvexEdgeHits++; | 
|---|
|  | 697 | btVector3 localContactNormalOnB = colObj0->getWorldTransform().getBasis().transpose() * cp.m_normalWorldOnB; | 
|---|
|  | 698 | btVector3 clampedLocalNormal; | 
|---|
|  | 699 | bool isClamped = btClampNormal(edge,swapFactor*tri_normal,localContactNormalOnB, info->m_edgeV1V2Angle,clampedLocalNormal); | 
|---|
|  | 700 | if (isClamped) | 
|---|
|  | 701 | { | 
|---|
|  | 702 | if (((normalAdjustFlags & BT_TRIANGLE_CONVEX_DOUBLE_SIDED)!=0) || (clampedLocalNormal.dot(frontFacing*tri_normal)>0)) | 
|---|
|  | 703 | { | 
|---|
|  | 704 | btVector3 newNormal = colObj0->getWorldTransform().getBasis() * clampedLocalNormal; | 
|---|
|  | 705 | //                                      cp.m_distance1 = cp.m_distance1 * newNormal.dot(cp.m_normalWorldOnB); | 
|---|
|  | 706 | cp.m_normalWorldOnB = newNormal; | 
|---|
|  | 707 | // Reproject collision point along normal. | 
|---|
|  | 708 | cp.m_positionWorldOnB = cp.m_positionWorldOnA - cp.m_normalWorldOnB * cp.m_distance1; | 
|---|
|  | 709 | cp.m_localPointB = colObj0->getWorldTransform().invXform(cp.m_positionWorldOnB); | 
|---|
|  | 710 | } | 
|---|
|  | 711 | } | 
|---|
|  | 712 | } | 
|---|
|  | 713 | } | 
|---|
|  | 714 | } | 
|---|
|  | 715 | } | 
|---|
|  | 716 |  | 
|---|
|  | 717 | btNearestPointInLineSegment(contact,v2,v0,nearest); | 
|---|
|  | 718 | #ifdef BT_INTERNAL_EDGE_DEBUG_DRAW | 
|---|
|  | 719 | btDebugDrawLine(tr*nearest,tr*cp.m_localPointB,blue); | 
|---|
|  | 720 | #endif //BT_INTERNAL_EDGE_DEBUG_DRAW | 
|---|
| [8393] | 721 | #ifdef BT_INTERNAL_EDGE_DEBUG_DRAW | 
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|  | 722 | btDebugDrawLine(tr * v2 + upfix, tr * v0 + upfix , blue ); | 
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|  | 723 | #endif | 
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| [7983] | 724 |  | 
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| [8393] | 725 | if (btFabs(info->m_edgeV2V0Angle)< triangleInfoMapPtr->m_maxEdgeAngleThreshold) | 
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| [7983] | 726 | { | 
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|  | 727 |  | 
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|  | 728 | #ifdef BT_INTERNAL_EDGE_DEBUG_DRAW | 
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|  | 729 | btDebugDrawLine(tr*contact,tr*(contact+cp.m_normalWorldOnB*10),black); | 
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|  | 730 | #endif //BT_INTERNAL_EDGE_DEBUG_DRAW | 
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|  | 731 |  | 
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|  | 732 | btScalar len = (contact-nearest).length(); | 
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|  | 733 | if(len<triangleInfoMapPtr->m_edgeDistanceThreshold) | 
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| [8393] | 734 | if( bestedge==2 ) | 
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| [7983] | 735 | { | 
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|  | 736 | isNearEdge = true; | 
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|  | 737 | #ifdef BT_INTERNAL_EDGE_DEBUG_DRAW | 
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|  | 738 | btDebugDrawLine(tr*nearest,tr*(nearest+tri_normal*10),white); | 
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|  | 739 | #endif //BT_INTERNAL_EDGE_DEBUG_DRAW | 
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|  | 740 |  | 
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|  | 741 | btVector3 edge(v2-v0); | 
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|  | 742 |  | 
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|  | 743 | if (info->m_edgeV2V0Angle==btScalar(0)) | 
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|  | 744 | { | 
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|  | 745 | numConcaveEdgeHits++; | 
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|  | 746 | } else | 
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|  | 747 | { | 
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|  | 748 |  | 
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|  | 749 | bool isEdgeConvex = (info->m_flags & TRI_INFO_V2V0_CONVEX)!=0; | 
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|  | 750 | btScalar swapFactor = isEdgeConvex ? btScalar(1) : btScalar(-1); | 
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|  | 751 | #ifdef BT_INTERNAL_EDGE_DEBUG_DRAW | 
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|  | 752 | btDebugDrawLine(tr*nearest,tr*(nearest+swapFactor*tri_normal*10),white); | 
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|  | 753 | #endif //BT_INTERNAL_EDGE_DEBUG_DRAW | 
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|  | 754 |  | 
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|  | 755 | btVector3 nA = swapFactor * tri_normal; | 
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|  | 756 | btQuaternion orn(edge,info->m_edgeV2V0Angle); | 
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|  | 757 | btVector3 computedNormalB = quatRotate(orn,tri_normal); | 
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|  | 758 | if (info->m_flags & TRI_INFO_V2V0_SWAP_NORMALB) | 
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|  | 759 | computedNormalB*=-1; | 
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|  | 760 | btVector3 nB = swapFactor*computedNormalB; | 
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|  | 761 |  | 
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|  | 762 | #ifdef DEBUG_INTERNAL_EDGE | 
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|  | 763 | { | 
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|  | 764 | btDebugDrawLine(cp.getPositionWorldOnB(),cp.getPositionWorldOnB()+tr.getBasis()*(nB*20),red); | 
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|  | 765 | } | 
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|  | 766 | #endif //DEBUG_INTERNAL_EDGE | 
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|  | 767 |  | 
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|  | 768 | btScalar        NdotA = localContactNormalOnB.dot(nA); | 
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|  | 769 | btScalar        NdotB = localContactNormalOnB.dot(nB); | 
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|  | 770 | bool backFacingNormal = (NdotA< triangleInfoMapPtr->m_convexEpsilon) && (NdotB<triangleInfoMapPtr->m_convexEpsilon); | 
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|  | 771 |  | 
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|  | 772 | if (backFacingNormal) | 
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|  | 773 | { | 
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|  | 774 | numConcaveEdgeHits++; | 
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|  | 775 | } | 
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|  | 776 | else | 
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|  | 777 | { | 
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|  | 778 | numConvexEdgeHits++; | 
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|  | 779 | //                              printf("hitting convex edge\n"); | 
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|  | 780 |  | 
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|  | 781 |  | 
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|  | 782 | btVector3 localContactNormalOnB = colObj0->getWorldTransform().getBasis().transpose() * cp.m_normalWorldOnB; | 
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|  | 783 | btVector3 clampedLocalNormal; | 
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|  | 784 | bool isClamped = btClampNormal(edge,swapFactor*tri_normal,localContactNormalOnB,info->m_edgeV2V0Angle,clampedLocalNormal); | 
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|  | 785 | if (isClamped) | 
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|  | 786 | { | 
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|  | 787 | if (((normalAdjustFlags & BT_TRIANGLE_CONVEX_DOUBLE_SIDED)!=0) || (clampedLocalNormal.dot(frontFacing*tri_normal)>0)) | 
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|  | 788 | { | 
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|  | 789 | btVector3 newNormal = colObj0->getWorldTransform().getBasis() * clampedLocalNormal; | 
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|  | 790 | //                                      cp.m_distance1 = cp.m_distance1 * newNormal.dot(cp.m_normalWorldOnB); | 
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|  | 791 | cp.m_normalWorldOnB = newNormal; | 
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|  | 792 | // Reproject collision point along normal. | 
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|  | 793 | cp.m_positionWorldOnB = cp.m_positionWorldOnA - cp.m_normalWorldOnB * cp.m_distance1; | 
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|  | 794 | cp.m_localPointB = colObj0->getWorldTransform().invXform(cp.m_positionWorldOnB); | 
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|  | 795 | } | 
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|  | 796 | } | 
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|  | 797 | } | 
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|  | 798 | } | 
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|  | 799 |  | 
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|  | 800 |  | 
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|  | 801 | } | 
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|  | 802 | } | 
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|  | 803 |  | 
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|  | 804 | #ifdef DEBUG_INTERNAL_EDGE | 
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|  | 805 | { | 
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|  | 806 | btVector3 color(0,1,1); | 
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|  | 807 | btDebugDrawLine(cp.getPositionWorldOnB(),cp.getPositionWorldOnB()+cp.m_normalWorldOnB*10,color); | 
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|  | 808 | } | 
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|  | 809 | #endif //DEBUG_INTERNAL_EDGE | 
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|  | 810 |  | 
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|  | 811 | if (isNearEdge) | 
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|  | 812 | { | 
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|  | 813 |  | 
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|  | 814 | if (numConcaveEdgeHits>0) | 
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|  | 815 | { | 
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|  | 816 | if ((normalAdjustFlags & BT_TRIANGLE_CONCAVE_DOUBLE_SIDED)!=0) | 
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|  | 817 | { | 
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|  | 818 | //fix tri_normal so it pointing the same direction as the current local contact normal | 
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|  | 819 | if (tri_normal.dot(localContactNormalOnB) < 0) | 
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|  | 820 | { | 
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|  | 821 | tri_normal *= -1; | 
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|  | 822 | } | 
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|  | 823 | cp.m_normalWorldOnB = colObj0->getWorldTransform().getBasis()*tri_normal; | 
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|  | 824 | } else | 
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|  | 825 | { | 
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| [8393] | 826 | btVector3 newNormal = tri_normal *frontFacing; | 
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|  | 827 | //if the tri_normal is pointing opposite direction as the current local contact normal, skip it | 
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|  | 828 | btScalar d = newNormal.dot(localContactNormalOnB) ; | 
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|  | 829 | if (d< 0) | 
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|  | 830 | { | 
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|  | 831 | return; | 
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|  | 832 | } | 
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| [7983] | 833 | //modify the normal to be the triangle normal (or backfacing normal) | 
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| [8393] | 834 | cp.m_normalWorldOnB = colObj0->getWorldTransform().getBasis() *newNormal; | 
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| [7983] | 835 | } | 
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| [8393] | 836 |  | 
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| [7983] | 837 | // Reproject collision point along normal. | 
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|  | 838 | cp.m_positionWorldOnB = cp.m_positionWorldOnA - cp.m_normalWorldOnB * cp.m_distance1; | 
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|  | 839 | cp.m_localPointB = colObj0->getWorldTransform().invXform(cp.m_positionWorldOnB); | 
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|  | 840 | } | 
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|  | 841 | } | 
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|  | 842 | } | 
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